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WO1998040266A1 - Systeme de suspension pour machine de travaux entrainee par courroie - Google Patents

Systeme de suspension pour machine de travaux entrainee par courroie Download PDF

Info

Publication number
WO1998040266A1
WO1998040266A1 PCT/US1998/001917 US9801917W WO9840266A1 WO 1998040266 A1 WO1998040266 A1 WO 1998040266A1 US 9801917 W US9801917 W US 9801917W WO 9840266 A1 WO9840266 A1 WO 9840266A1
Authority
WO
WIPO (PCT)
Prior art keywords
work machine
end portion
pair
suspension system
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1998/001917
Other languages
English (en)
Inventor
Ronald L. Satzler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Priority to AU61404/98A priority Critical patent/AU6140498A/en
Publication of WO1998040266A1 publication Critical patent/WO1998040266A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/104—Suspension devices for wheels, rollers, bogies or frames
    • B62D55/112—Suspension devices for wheels, rollers, bogies or frames with fluid springs, e.g. hydraulic pneumatic
    • B62D55/1125—Hydro-pneumatic or pneumatic, e.g. air-cushioned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/104—Suspension devices for wheels, rollers, bogies or frames
    • B62D55/112—Suspension devices for wheels, rollers, bogies or frames with fluid springs, e.g. hydraulic pneumatic

Definitions

  • This invention relates generally to a work machine being driven by a rubber belted track, and more particularly, to a suspension system.
  • the present invention is directed to overcome one or more of the problems as set forth above. Disclosure of the Invention
  • a work machine is comprised of a main frame including a two- piece structure defining a first structure and a second structure.
  • the first structure is pivotally connected to the second structure.
  • An engine is mounted near a first end portion of the first structure, and an operator's station is located near a second end portion of the first structure.
  • a pair of endless rubber belted tracks are supported from the second structure, one of each pair of endless rubber belted tracks is positioned on an opposite side of the work machine and is powered by the engine.
  • a suspension system is operatively interposed the first structure and the second structure.
  • FIG. 1 is a side elevational view of the belt driven work machine embodying the present invention.
  • FIG. 2 is a partially sectioned elevational view of the belt driven work machine embodying the present invention
  • a work machine 10 such as an agricultural tractor, is shown having a rubber belted track system 12.
  • the rubber belted track system 12 utilizes a pair of endless rubber belted tracks 14, each having an inner surface 16 and a pair of sides 18.
  • Each of the pair of endless rubber belted track is positioned on one of an opposite sides 20 of the work machine 10.
  • the work machine 10 includes a main frame 22 having a central axis 24 extending between the pair of endless rubber belted tracks 14.
  • An operator's station 30 is supported on the main frame 22 and is surrounded by a cab 32, a propulsion system 34 including an engine 36 and a transmission system 38 are also supported on the main frame 22.
  • the hitch 50 includes a 3-point configuration and is pivotally mounted to the main frame 22. For example, the hitch 50 moves through an arch on either side of the central axis 24.
  • Each of the pair of endless rubber belted tracks 14 is supported from the main frame 22.
  • Each of the pair of endless rubber belted tracks 14 is powered individually by the engine 36.
  • the transmission system 38 includes a mechanical drive system 64 utilizing a differential steering mechanism 66.
  • the transmission system 38 could use a pair of motors being driven by either a conventional hydraulic arrangement or an electrical arrangement. If the hydraulic arrangement was used, either a single pump or a pair of pumps could be used.
  • the differential steering mechanism 66 transmits power from the engine 36 to a final drive 68 supported on a roller frame 70 of each of the pair of endless belted tracks 14.
  • the main frame 22 in this application includes a two-piece structure being defined by a first structure 80 and a second structure 82.
  • the first structure 80 has a first end portion 84 and a second end portion 86.
  • the engine 36 is mounted near the first end portion 84 of the first structure 80 and the operator station 30 is located near the second end portion 86 of the first structure 80.
  • Located intermediate the first end portion 84 and the second end portion 86, but nearest to the second end portion 86, of the first structure 80 is a first pivot point 88 defining a first pivot axis 90 being traverse to the central axis 24.
  • the suspension system 94 is operatively interposed the first structure 80 and the second structure 82.
  • the suspension system 94 includes a pair of cylinders 92.
  • the pair of cylinders 92 can be in communication with an accumulator 98.
  • the pair of cylinders 92 are hydraulic cylinders 102 of a generally conventional design and includes a rod member 104 defining a rod end 106 and a piston end portion 108.
  • the rod end 106 is attached to the first structure 80
  • the piston end portion 108 is attached to the second structure 82.
  • the suspension system 94 allows the first structure 80 to travel through an arc of about 10 degrees as shown by "A" and "A" 1 .
  • the suspension system 94 could utilize additional passive components such as a pneumatic cylinder, an air over hydraulic cylinder, a shock absorber mechanism, coil springs or rubber springs.
  • the suspension system 94 could utilize an active system, not shown, such as a motion accelerometer being attached to the front end portion 84 of the first structure 80 sending a signal therefrom and feeding data to a controller. Within the controller, the data would be interpreted and fluid would be directed to the cylinder 102 to compensate for the either the upward or downward motion between the first structure 80 and the second structure 82.
  • a pair of motion accelerometers could be used. One of each of the pair of accelerometers would be attached to the front end portion 84 of the first structure 80 and to the roller frame 70 in an area generally corresponding to the front of the machine 10 or the front end portion 84 of the first structure 80. Signals or data would be sent to the controller, interpreted. Fluid would be sent to the cylinders 102 to compensated for the variation in motion and provide a suitable active suspension system 94.
  • the second structure 82 defines a first end portion 120 and a second end portion 122. Located intermediate the first end portion 120 and the second end portion 122, but nearest to the second end portion 122, is a second pivot point 124 being identically located with the first pivot point 88. The second pivot point 124 defines a second pivot axis 126 being identically located with that of the first pivot axis 88. The second pivot axis 126 is transverse to the central axis 24. Again, the second pivot axis 126 of the second structure 82 is symmetrical about the pivot axis 90 of the first structure 80.
  • the piston end portion 108 of the pair of hydraulic cylinders 102 is attached to the first structure 80 on each of the opposite sides 20 of the work machine 10 near the first end portion 120.
  • the rod end 106 of the pair of hydraulic cylinders 102 is attached to the second structure 82 on each of the opposite sides 20 of the work machine 10 near the first end portion 120.
  • the hitch 50 is attached to the second structure 82 near the second end portion 122.
  • the suspension system 94 when used with the work machine 10 having the rubber belted track system 12 extends the operating parameters of the work machine 10. For example, when working in a field having terraces, as the work machine 10 travels up and over a terrace, the second structure 82 and the pair of endless rubber tracks 14 follow the ground contour up the terrace. At the top of the terrace and at the point at which the center of gravity of the work machine 10 passes over the top, the second structure 82 abruptly falls to engage the downward slope of the terrace. The pair of cylinders 92 interposed the first structure 80 and the second structure 82 will cushion the impact to the engine 36 and the operator's station 30.
  • the flexibility, variation in dampening characteristics, of the suspension system 94 is fixed and cannot be varied.
  • the pair of cylinders 92 uses a combination of a hydraulic cylinder 102 and an accumulator or another variable input, the flexibility of the suspension system 94 can be varied to match the operating conditions.
  • the type of cylinders 92 could be varied, such as a hydraulic, pneumatic or any combination thereof.
  • the suspension system 94 will functionally improve operations over any obstacle such as a rise or change in elevation of a road surface, plowed or disc ground and other such variables.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

Les charpentes qu'on utilise actuellement pour équiper une machine de travaux entraînée par courroie n'arrivent pas compenser de manière adéquate les charges d'impact élevées qu'on y place. Le système de suspension (94) de l'invention, destiné à équiper une machine de travaux entraînée par courroie (10), peut valablement compenser des charges d'impact élevées. Par exemple, un charpente principale (22) comprend une structure à deux éléments délimitant une première structure (80) et une deuxième structure (82). La première structure (80) est fixée de manière rotative à la deuxième structure (82) et un système de suspension (94) est intercalée de manière fonctionnelle entre la première structure (80) et la deuxième structure (82).
PCT/US1998/001917 1997-03-13 1998-02-06 Systeme de suspension pour machine de travaux entrainee par courroie Ceased WO1998040266A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61404/98A AU6140498A (en) 1997-03-13 1998-02-06 Suspension system for a belt driven work machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81663197A 1997-03-13 1997-03-13
US08/816,631 1997-03-13

Publications (1)

Publication Number Publication Date
WO1998040266A1 true WO1998040266A1 (fr) 1998-09-17

Family

ID=25221202

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/001917 Ceased WO1998040266A1 (fr) 1997-03-13 1998-02-06 Systeme de suspension pour machine de travaux entrainee par courroie

Country Status (2)

Country Link
AU (1) AU6140498A (fr)
WO (1) WO1998040266A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2977300A1 (fr) 2014-07-25 2016-01-27 CLAAS Industrietechnik GmbH Vehicule agricole
EP2994369A4 (fr) * 2013-05-08 2017-02-08 Bae Systems Hägglunds Aktiebolag Dispositif de suspension pour véhicule à chenilles
EP3603374A1 (fr) * 2018-08-03 2020-02-05 CLAAS Selbstfahrende Erntemaschinen GmbH Engin de travail agricole

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237445B (de) * 1965-02-12 1967-03-23 Rheinstahl Henschel Ag Leichtes Kampffahrzeug, vorzugsweise mit Gleisketten- oder Vielradantrieb
DE3039366A1 (de) * 1980-10-18 1982-05-19 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Gleiskettenfahrzeug
WO1985002824A1 (fr) * 1983-12-20 1985-07-04 Caterpillar Tractor Co. Vehicule de travail a courroie a entrainement par friction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237445B (de) * 1965-02-12 1967-03-23 Rheinstahl Henschel Ag Leichtes Kampffahrzeug, vorzugsweise mit Gleisketten- oder Vielradantrieb
DE3039366A1 (de) * 1980-10-18 1982-05-19 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Gleiskettenfahrzeug
WO1985002824A1 (fr) * 1983-12-20 1985-07-04 Caterpillar Tractor Co. Vehicule de travail a courroie a entrainement par friction

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2994369A4 (fr) * 2013-05-08 2017-02-08 Bae Systems Hägglunds Aktiebolag Dispositif de suspension pour véhicule à chenilles
US10144460B2 (en) 2013-05-08 2018-12-04 BAE Systems Hägglunds Aktiebolag Suspension device for tracked vehicle
EP2977300A1 (fr) 2014-07-25 2016-01-27 CLAAS Industrietechnik GmbH Vehicule agricole
DE102014110551A1 (de) 2014-07-25 2016-01-28 Claas Industrietechnik Gmbh Landwirtschaftliches Fahrzeug
US9937969B2 (en) 2014-07-25 2018-04-10 Claas Industrietechnik Gmbh Agricultural vehicle
EP3603374A1 (fr) * 2018-08-03 2020-02-05 CLAAS Selbstfahrende Erntemaschinen GmbH Engin de travail agricole

Also Published As

Publication number Publication date
AU6140498A (en) 1998-09-29

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